Envío 4359

Código

import java.util.Scanner;

public class Main {
    public static void main(String[] args){
    	Scanner sc= new Scanner(System.in);
        int N = sc.nextInt();
        int numberArray[] = new int[N];
        int totalSum = 0;
        for(int i = 0; i < N; i++)
        {
            numberArray[i] = sc.nextInt();
            totalSum += numberArray[i];
        }
        
        int leftSum = 0;
        int rightSum = 0;
        int result = 0;
        for(int i = 0; i < N; i++)
        {
        	leftSum += numberArray[i];
        	rightSum = totalSum - leftSum;
        	if (leftSum > 0 && rightSum < 0) {
        		result = i + 1;
        		break;
        	}
        }
        sc.close();
        
        if (result != 0) {
        	System.out.println(result);
        } else {
        	System.out.println("Impossible");
        }
    }
}